When its all said and done, Air Shows are entertainment for the masses (bread and circuses), the commentary is part of the package.
Sure for the purist, its a lot more and I do like the sound of some aeroplane engines, but when I do go to an airshow, its about getting sunburnt, walking miles and looking at a wide range of aeroplanes and other interesting things.
Having the echo of music and comentary is just part of the experience as is squinting looking into the sun at some aeroplane up in the blue.
cheers